This is the 4447th most frequent Russian word.
возвращения
"Возвращения" means "return" or "coming back" in English.
In this sentence, 'возвращения' refers to the return of a person from a trip, denoting an event or occurrence.
Он ждал её возвращения из поездки.
He was waiting for her return from the trip.
Here, 'возвращению' (a dative form of 'возвращение') expresses the speaker's joy regarding someone's return.
Я рад твоему возвращению.
I am glad for your return.
In this example, 'возвращение' refers to the act of coming back to a specific place.